In respect of SpamAssassin, the SpamAssassin version currently packaged with Dapper (and Edgy!) is 3.1.0 - now ten months (and four releases!) out of date.
This makes it (sadly) to all intents and purposes useless as a spam filtering solution for real world deployment. The spam/spam filtering arena is effectively an arms race; the only way to filter spam effectively using SpamAssassin is to get current and stay current. I have raised this as a bug in and of itself: https://launchpad.net/distros/ubuntu/+source/spamassassin/+bug/54480 -- Better spam filtering for evolution https://launchpad.net/bugs/9870 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs